9685 KPTI %cr3 handling needs fixes

*** 1199,1208 ****
--- 1199,1209 ----
          call    panic
  4:
          leaq    dtrace_badtrap(%rip), %rdi
          xorl    %eax, %eax
          call    panic
+         SET_SIZE(cmntrap_pushed)
          SET_SIZE(cmntrap)
          SET_SIZE(_cmntrap)
  
  #elif defined(__i386)